From patchwork Thu Aug 15 05:44:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Leizhen (ThunderTown)" X-Patchwork-Id: 11095081 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9F2B81398 for ; Thu, 15 Aug 2019 05:46:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 894A4286E0 for ; Thu, 15 Aug 2019 05:46:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 79CAB2882F; Thu, 15 Aug 2019 05:46:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 3C1F2286E0 for ; Thu, 15 Aug 2019 05:46:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=rRs5sbw1ZzX7PZkfbXvP8aVHZJ2aKZuTImE+acB/47k=; b=tul43aNPu3l4WK mzakb3NUFThSS2CB5tkmr3OG+T/czi2b7CG07TQ4Dut8YmWoIUX4LTzlIthBYLZFS4+kvYFceZPPf bYf0Pcd1Wngct7yvHAZh+ou2ikJDN9Ri8KsnunJesvN5vem/Jz74QUYI5+bpW4EiycnWfwfu112I5 dz5Q03RkehG3bL/C80zAf9xq+qqP/GO6Z/DZ1+lTelJQsdfjo2tCIzGp2CqOucId1YH2ZUC+sYlQo gkYprK3SJdTJy8XL38VYgOJuyhJnlACmq35vMXKWdkqPSzJ52XKdqOedZnMpT36VpkYYPkphx1Qpp PdhC0+mOP+yPPp1/McsQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hy8aN-0008U9-LU; Thu, 15 Aug 2019 05:46:07 +0000 Received: from merlin.infradead.org ([2001:8b0:10b:1231::1]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hy8aJ-0008Sy-Th for linux-arm-kernel@bombadil.infradead.org; Thu, 15 Aug 2019 05:46:03 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=Content-Type:Content-Transfer-Encoding: MIME-Version:Message-ID:Date:Subject:CC:To:From:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=A6pYuT4l1bnfrqQfspgQo+WHkOoA1W5fDsNVVderSO0=; b=vg7WvK4LAqogHi/PtiVl16y3Im wvKH/JLPS+CyuQatx67DS051r1kflIfpR9J5RApcnMtlZJvLLF1ln2ju4Jcx0iSmjyzYW0mb2GFQg 9UCrLvvsrPtAd8lO/OvjdXelepXQ3mAFSFRMpkEOcFZEZo13LQ/gtFLQi8xZ0MUhOtgBBcEIOEau9 LvdEN2TvO/xQCf42pbUBbL16zPbXU1n0T6sqsGjbGgcwZsYaPIt7zEg+e7dXWezTS+rWAQcvM26QF nRqoWBdhwb7CV7/ljgMGigjI8VmSQWZGhRZLgfawlb7UYSvp1MOT2VqCFlb/MvBd+aq++ma37KZvb 99HIixQw==; Received: from szxga06-in.huawei.com ([45.249.212.32] helo=huawei.com) by merlin.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hy8aG-0007qo-Vm for linux-arm-kernel@lists.infradead.org; Thu, 15 Aug 2019 05:46:02 +0000 Received: from DGGEMS410-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id DCF73649FA0FCEA333F3; Thu, 15 Aug 2019 13:45:10 +0800 (CST) Received: from HGHY4L002753561.china.huawei.com (10.133.215.186) by DGGEMS410-HUB.china.huawei.com (10.3.19.210) with Microsoft SMTP Server id 14.3.439.0; Thu, 15 Aug 2019 13:45:03 +0800 From: Zhen Lei To: Jean-Philippe Brucker , "Jean-Philippe Brucker" , John Garry , "Robin Murphy" , Will Deacon , Joerg Roedel , iommu , linux-arm-kernel , linux-kernel Subject: [PATCH v2 0/2] add nr_ats_masters for quickly check Date: Thu, 15 Aug 2019 13:44:37 +0800 Message-ID: <20190815054439.30652-1-thunder.leizhen@huawei.com> X-Mailer: git-send-email 2.21.0.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.133.215.186] X-CFilter-Loop: Reflected X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Zhen Lei Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP v1 --> v2: 1. change the type of nr_ats_masters from atomic_t to int, and move its ind/dec operation from arm_smmu_enable_ats()/arm_smmu_disable_ats() to arm_smmu_attach_dev()/arm_smmu_detach_dev(), and protected by "spin_lock_irqsave(&smmu_domain->devices_lock, flags);" Zhen Lei (2): iommu/arm-smmu-v3: don't add a master into smmu_domain before it's ready iommu/arm-smmu-v3: add nr_ats_masters for quickly check drivers/iommu/arm-smmu-v3.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-)